討論:Strophanthus
山羊百科，林文智老師的植物、山岳、攝影紀錄
- 《中国植物志》 第63卷 (1977) >> 150页 PDF >> 羊角拗属 Strophanthus；http://www.iplant.cn/info/Strophanthus?t=z
- FOC Vol. 16 Page 177；32. Strophanthus de Candolle, Bull. Soc. Philom. Paris. 3: 122. 1802.羊角拗属；http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=131774
- H. J. BEENTJE A MONOGRAPH ON STROPHANTHUS DC. (APOCYNACEAE) Meded. Landbouwhogeschool Wageningen 82-4 1982
- Engl. & Pax ex Pax, Bot. Jahrb. Syst. 15(3): 369 (1892).；；https://www.biodiversitylibrary.org/page/336785#page/376/mode/1up
- DC., Prodr. [A. P. de Candolle] 8: 417 (1844).；https://www.biodiversitylibrary.org/page/163374#page/425/mode/1up
- Franch. J. de Botanique 7: 318 1893；https://www.biodiversitylibrary.org/page/3093317#page/328/mode/1up
- FRANCHET.,M. A. SUR QUELQUES NOUVEAUX STROPHANTHUS
- Franch., Nouv. Arch. Mus. Hist. Nat. sér. 3,, 5: 249 1893.；https://www.biodiversitylibrary.org/item/113508#page/265/mode/1up
- Gilg, Monographieen afrikanischer Pflanzen-Familien und -Gattungen 7: 7 1903；https://www.biodiversitylibrary.org/page/36883956#page/15/mode/1up
- Engler, A；Monographieen afrikanischer Pflanzen-Familien und -Gattungen
- Miq., Fl. Ind. Bat. 2: 442 (1858).；https://www.biodiversitylibrary.org/item/1864#page/450/mode/1up
- Hook, Fl. Brit. India [J. D. Hooker] 3(9): 655 (1882)；https://www.biodiversitylibrary.org/page/456235#page/659/mode/1up
